The invention relates to a family circuit load decomposition method and system for demand response. The household circuit load decomposition method comprises the steps of substituting acquired circuitload data of a target family to a depth long short-term memory network model which is built in advance; and decomposing the circuit load data of the target family by the depth long short-term memorynetwork model, splicing a decomposition result to obtain a power utilization condition of each power utilization device of the target family, wherein the depth long short-term memory network model comprises typical family circuit load data which is acquired in advance.